OregonFlora species comparison

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Juncus acutus

Juncus pelocarpus

brown-fruited rush
Habit Plants perennial, 3–70 cm tall, rhizomatous.
Leaves

round; hollow, septate;

auricles 0.3– 1 mm.
Inflorescences

loose cymes, 1–2(3) flowers per node.
Flowers

tepals 6, brown or reddish;

stamens 6;

filaments 0.2–0.8 mm;

anthers 0.2–1.2 mm;

style 0.3–0.5 mm.
Capsules

shorter than or longer than the tepals, pale brown to dark brown, 1-chambered.
Seeds

ellipsoid to ovoid, 0.3–0.5 × 0.2–0.3 mm, apiculate, faintly reticulate.
2n

=40.

Juncus acutus

Juncus pelocarpus
Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Sandy shores, ditches, cranberry farms. 0–50m. Est. WA; eastern North America; north to British Columbia. Exotic.

The diffuse inflorescence is distinct. It is native in eastern North America.
Source Flora of Oregon, volume 1, page 282
Peter Zika
Sibling taxa
J. acuminatus, J. anthelatus, J. articulatus, J. balticus, J. bolanderi, J. brevicaudatus, J. breweri, J. bryoides, J. bufonius, J. bulbosus, J. canadensis, J. capillaris, J. capitatus, J. compressus, J. confusus, J. conglomeratus, J. covillei, J. diffusissimus, J. drummondii, J. dudleyi, J. effusus, J. ensifolius, J. ensifolius x Juncus nevadensis, J. exiguus, J. falcatus, J. filiformis, J. gerardi, J. hemiendytus, J. hesperius, J. howellii, J. inflexus, J. interior, J. kelloggii, J. laccatus, J. lescurii, J. longistylis, J. marginatus, J. mertensianus, J. mexicanus, J. nevadensis, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. planifolius, J. ranarius, J. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. triglumis, J. trilocularis, J. uncialis
J. acuminatus, J. anthelatus, J. articulatus, J. balticus, J. bolanderi, J. brevicaudatus, J. breweri, J. bryoides, J. bufonius, J. bulbosus, J. canadensis, J. capillaris, J. capitatus, J. compressus, J. confusus, J. conglomeratus, J. covillei, J. diffusissimus, J. drummondii, J. dudleyi, J. effusus, J. ensifolius, J. ensifolius x Juncus nevadensis, J. exiguus, J. falcatus, J. filiformis, J. gerardi, J. hemiendytus, J. hesperius, J. howellii, J. inflexus, J. interior, J. kelloggii, J. laccatus, J. lescurii, J. longistylis, J. marginatus, J. mertensianus, J. mexicanus, J. nevadensis, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. planifolius, J. ranarius, J. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. triglumis, J. trilocularis, J. uncialis
Web links 
Unless otherwise noted, all data comes from OregonFlora.



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